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问题 选择题

《中 * * 关于深化行政管理体制改革的意见》提出，要加强依法行政和制度建设，健全对行 * * 力的监督制度。在国家机关中，对行 * * 力具有内部监督功能的是[ ]

 ①人民代表大会及其常委会 ②各级人民法院和人民检察院 ③ 国家监察部和地方监察机关 ④国家审计署和地方审计机关

A．①②

B．①③

C．②④

D．③④

答案

答案：D

阅读理解
A Simple Scientific Experiment
Below is a description of a single scientific experiment. It shows us how iron reacts ( 反应) with air and with water.
Aim : To find out if iron rusts( 生锈) (a) in dry air ; (b) in water that has no air in it ( air- free water) ; (c) in ordinary water.
Materials : 3 clean iron nails ( 铁钉) ; test tubes ; test tube holder ; cotton wool ; oil ; Bunsen burner.
Iron in dry air
Method
(1)Put some iron nails at the bottom of a test tube.
(2)Push some cotton wool down the tube.
(3)Leave the tube for one week.
Result
After one week, the nails have not rusted.
Conclusion
Iron does not rust in dry air.
Iron in air-free water
Method
(1)Half-fill a test tube with water.
(2)Boil the water for three minutes. (This makes sure there is no air in the water.
(3)Put two or three clean nails in the water.
(4)Add some oil to the water. (This will keep air out of the water.)
(5) Leave the tube for one week.
Result
The nails do not rust in the tube with air-free water.
Conclusion
Iron does not rust in air- free water.
Iron in ordinary water
Method
(1)Half –fill a test tube with water and add two or three clean nails.
(2)Leave the tube for one week.
Result
The nails rust in the tube with ordinary water.
Conclusion
Iron rusts in ordinary water. (238 words)
小题1:In the first part of the experiment the cotton wool is most probably used to ______________.
A．keep the air dryB．keep the tube wet
C．make the nails rustD．keep the tube clean
小题2:What are necessary steps to make sure the water in the tube is air free?
①Leave half a tube of water in it              
②Boil the water for some time
③Put some clean iron nails in the tube           
④Add some oil to the water
A．①②B．①③C．②③D．②④
小题3:We can conclude from the experiment that only ____________ makes iron rusty.
A．dry airB．cotton woolC．ordinary waterD．air-free water
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单项选择题

正常人先用力深吸气，然后以最快的速度呼出气体。第1秒末的呼出气量占肺活量的百分数应为

A．60%
B．83%
C．96%
D．99%
E．100%
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